It’s Political: Anti-Trump protesters confronted a phalanx of police in riot gear yesterday afternoon after Donald Trump spoke at the San Diego Convention Center. Some of the police officers were swinging their clubs. At least 35 people were arrested and 18 sought medical attention.

The chaos outside matched some of the turmoil inside the Trump campaign itself. The campaign this week fired its national political director Rick Wiley after only weeks on the job and has failed to fill other positions, including communications director. The NY Times reports that inside Trump’s campaign, “the limits of his managerial style — reliant on his gut and built around his unpredictable personality — are vividly on display.”

Asked by the NY Times for comment on his campaign organization, Trump e-mailed, “You two wouldn’t know how to write a good story about me if you tried — dream on.”

It’s For You: The possibility that cellphones cause cancer has been revived by a study just released by the Dept. of Health and Human Services. The study found that some rats developed brain and heart tumors when exposed to cellphone radiation nine hours a day from birth until age two.

About two to three percent of male rats developed brain tumors, but more of them were discovered to have tumors in their hearts. The incidence among female rats was negligible.

The dependability of the study is under question, but as the authors wrote, “Given the extremely large number of people who use wireless communication devices, even a very small increase in the incidence of disease resulting from exposure to the RFR (Radio Frequency Radiation) generated by those devices would have broad implications for public health.”

Waiting for Godot: The Transportation Security Administration sent what has been described as a “surge” of inspectors to the 20 busiest American airports to speed passengers through security over the holiday weekend. As many as 25 million people are travelling this weekend and expected to take hours to get through security.

The TSA has pledged to put more people on the job, but with the time it takes to train them, this summer is already lost. Get there early.

The Rich Are Different: Pay for corporate executives was down about 15 percent last year, but don’t feel sorry for anyone. The lowest paid executive of the 200 companies that make $1 billion or more was paid $12.2 million.

The top paid executive was Dara Khosrowshahi of Expedia, who made $94.6, million followed by Les Moonves of CBS, $56.4 million. Marissa Mayer, the executive who’s been unable to turn the fortunes of Yahoo!, and can’t even sell it, made $36 million. As George Bernard Shaw once said after tipping an inattentive waitress $100, “That’s what I tip for bad service.”

Rio: The World Health Organization has rejected a call by 100 scientists to move this summer’s Olympic games from Rio de Janeiro to avoid a spread of the Zika virus. Brazil is the center of the epidemic.

The WHO said, moving the games would “not significantly alter” the spread of the virus.

So far the Olympics have more trouble with drugs than bugs. An additional 23 athletes from the summer games have been accused of doping in the 2012 London games and could be banned from Rio. Add that to 30 already caught.

No Choke: An 87-year-old woman in a Cincinnati home for the elderly was choking the other day on a piece of meat and a 96-year-old man got up to administer the Heimlich maneuver. The woman’s savior was none other than Dr. Henry Heimlich, who invented the technique for pumping air in the victim’s abdomen to pop out an object blocking the airway. Heimlich said he had never done it before in his life. “I didn’t know I really could do it until the other day.”

-30-